Buffer overflow in Cisco Web Security Appliance
CVE-2017-3870
A vulnerability in the URL filtering feature of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass a configured URL filter rule. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA), both virtual and hardware appliances, that are configured with URL filters for email scanning. More Information: CSCvc69700. Known Affected Releases: 8.5.3-069 9.1.1-074 9.1.2-010.
Vulnerability class: Buffer Overflow
EPSS: 0.015 (72.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Cisco Web_security_appliance — versions 8.5.3-069, 9.1.1-074, 9.1.2-010
- N/a Cisco Web Security Appliance — versions Cisco Web Security Appliance
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- psirt@cisco.com (vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2017-3870?
- CVE-2017-3870 is a medium-severity vulnerability in Cisco Web Security Appliance, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.8/10. Published 2017-03-17.
- How severe is CVE-2017-3870?
- Medium severity. CVSS v3 base score is 5.8 out of 10.